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- W2616082537 abstract "Photodetectors in the non-visible region of the electromagnetic spectrum are essential for security, defense and space science as well as industrial and scientific applications. The research activities at Fraunhofer IAF cover a broad range in the infrared (IR) regime. Whereas short-wavelength IR (SWIR, <1.7 μm) detectors are realized by InGaAs/InP structures, InAs/GaSb type-II superlattice (T2SL) infrared detectors are developed for the spectral bands from mid- (MWIR, 3-5 μm) to long-wavelength IR (LWIR, 8-12 μm). We report on the extension of the superlattice empirical pseudopotential method (SEPM) to 300 K for the design of LWIR heterostructures for operation near room temperature. Recently, we have also adapted heterostructure concepts to our well established bi-spectral T2SL MWIR detector resulting in a dark current density below 2 × 10<sup>-9</sup> A/cm<sup>2</sup> for a cut-off wavelength close to 5 μm. Finally, we present first results obtained with a gated viewing system based on our InGaAs/InAlAs/InP avalanche photodiode arrays." @default.
- W2616082537 created "2017-05-26" @default.
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- W2616082537 date "2017-02-22" @default.
- W2616082537 modified "2023-09-26" @default.
- W2616082537 title "Photodetector development at Fraunhofer IAF: From LWIR to SWIR operating from cryogenic close to room temperature" @default.
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- W2616082537 doi "https://doi.org/10.1117/12.2262509" @default.
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